John, Duke of Östergötland, Date of Birth, Place of Birth, Date of Death
TweetJohn, Duke of Östergötland
Swedish prince
Date of Birth: 
Place of Birth: Uppsala Castle, Uppsala County, Sweden
About John, Duke of Östergötland
- John of Sweden, Duke of Östergötland (in Swedish Johan) (18 April 1589 at Uppsala Castle – 5 March 1618 at Bråborg Castle in Östergötland) was a Swedish royal dynast.
- He was titular Duke of Finland 1590–1606 and reigning Duke of Östergötland 1606–18. His father was John III of Sweden and his mother was Gunilla Bielke.
- John's half-brother was King Sigismund III of Poland (1566–1632, reigned in Sweden in 1592–99, and in the Polish–Lithuanian Commonwealth in 1587–1632).
- His uncle was Charles IX of Sweden, who ruled from 1599 to 1611, and his first cousin was Gustav II Adolf of Sweden (1594–1632).
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